The mid control on this thing wasn’t working. So, guts:

Close up of the board:

Looking around I found a bunch of cold/bad solder joints and plenty of unnecessary long wire. I took the time to clean this up as well as to repair the non-working mids control.

All of that was cleaned up along with repairing the following. Cut/lifted trace where the mids control was wired.

Removed:

Repaired with thick bent jumper:

Done! Cleaned up wiring:

Put back together and excess wire removed: